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| Titel |
The vertical structure of ozone and water vapor profiles in Lhasa within Asia summer monsoon anticyclone during the stratospheric intrusion |
| VerfasserIn |
Dan Li, Bärbel Vogel, Jianchun Bian, Rolf Müller, Gebhard Günther, Zhixuan Bai, Qian Li, Qiujun Fan, Jinqiang Zhang |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250150406
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| Publikation (Nr.) |
 EGU/EGU2017-14864.pdf |
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| Zusammenfassung |
| A stratospheric intrusion process occurred over the southeastern side of the Asia summer
monsoon (ASM) region is investigated using the balloon-borne measurements of ozone and
water vapor during 18−20 August 2013. Data from Lhasa (29.66∘ N, 91.14∘ E, above sea
level (asl.) 3,650 m) show that the positive relative change of the ozone mixing ratios in the
tropopause layer attained to 90 % on 19 and 20 August. The backward trajectory calculation
from CLaMS model and the satellite data from the ozone monitoring instrument (OMI) and
the atmospheric infrared sounder (AIRS) indicate that the (stratospheric) air parcels
intruded (originated) from the Northeast Asia to the southeastern edge of the ASM
anticyclone. Meanwhile, typhoon Utor occurred over the sourtheastern edge of the
ASM and lasted from 8 to 18 August 2013. The convection associated with Utor
uplifted air with low ozone from the Western Pacific to the middle/upper troposphere.
Air parcels with high ozone from the high latitude and with low ozone from the
Western Pacific met at the sourtheastern side of the ASM and then transported
westward to Lhasa over long-distances (∼2,000 km). In addition, the laminated
identification method is used to identify the laminae structure of the ozone and
water vapor profiles from the middle troposphere to the lower stratosphere in Lhasa,
confirming the role of the dynamic disturbance (e.g., Rossby and gravity wave) |
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